High idle after cleaning throttle body

JDOODY8531

MEMBER
2005 CHRYSLER TOWN AND COUNTRY
3.3L
6 CYL
2WD
AUTOMATIC
236,000 MILES

When first starting and engine is cool the throttle will drop a bit but immediately raises to 2,100 RPMs. It runs high in park, and while in gear.

Sunday, June 5th, 2022 AT 3:23 PM

4 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

This can be because of two different factors either you have a vacuum leak because the sealing gasket got damaged when you reassembled the throttle body back into the engine, here, or the engine's computer needs to relearn which can take a day or two. Here is a guide to help you check for leaks and how to replace the gasket for the throttle body in the diagrams below:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

and

https://youtu.be/Ui8zhMLp5EM

If everything checks out just drive the van for a few days and it should relearn the idle speed. Also are there any check engine lights on?

This guide can help:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

Images (Click to make bigger)

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Monday, June 6th, 2022 AT 12:40 PM

JDOODY8531

MEMBER
3 POSTS

Thank you. I will check for a vacuum leak. I doubt that it will reset. I've tried but will give it a shot. This van is one I'm trying to get back on the road. I'll get back to you with the results.

Was this

answer

helpful?

Yes

No

Monday, June 6th, 2022 AT 6:02 PM

JDOODY8531